Online FLV to MP4 converter | Free GroupDocs Apps

GroupDocs Products
Conversion App
Convert FLV to MP4

By uploading your files or using our service you agree with our Terms of Service and Privacy Policy.

We have already processed 5,838,580 files with total size of 9,548,335 Mbytes

Convert FLV to MP4 files online with our free video converter app. No matter your platform — Windows 10, Mac or iPhone — you can convert FLV audio files with any resolution rapidly.

The most popular video formats are MP4, AVI, MKV, and MOV. MP4 is the most widely supported, balancing quality and file size, while AVI and MKV offer flexibility for high-quality playback, and MOV is optimized for Apple devices. Video files can be edited using video editing software such as Adobe Premiere Pro, Final Cut Pro, or DaVinci Resolve.

Change FLV to MP4 in seconds — drop your file into the upload form, pick MP4 as the output, and hit Convert. Download the result video file right after conversion.

Check our video

FLV

Flash Video file format

FLV (Flash Video File) is a container file format developed by Adobe Systems for delivering video and audio content over the internet. It is commonly used with Adobe Flash Player, supported by media players like VLC, and can be created or converted using tools like FFmpeg or Adobe Animate. The format uses a lightweight structure with metadata tags, supports streaming via RTMP, and allows for embedding of interactive elements like captions and cue points, making it suitable for web-based video playback.

MP4

MPEG-4 file format

MP4 (MPEG-4 Video File) is a widely used digital multimedia container format designed to store video, audio, subtitles, and images, offering high compression efficiency and compatibility across devices. It is supported by popular media players like VLC, QuickTime, and Windows Media Player, as well as editing tools such as Adobe Premiere Pro and Final Cut Pro. The format uses a hierarchical structure with boxes (or atoms) to organize data, supporting advanced features like streaming, metadata embedding, and DRM (Digital Rights Management) for secure content distribution.

How it works

How to convert FLV to MP4

Step 1

Click inside the file drop area to upload FLV file or drag & drop FLV file.

Step 2

Click on Convert button. Your FLV files will be uploaded and converted to MP4 result format.

Step 3

Download link of result files will be available instantly after conversion.

Step 4

You can also send a link to the MP4 file to your email address.

FAQ

Questions & Answers

Is my data secure when converting a FLV to MP4?

Absolutely! Your files are processed securely. The MP4 download link is available immediately after conversion, and all uploaded files are automatically deleted after 24 hours. No one else can access your files.
Is there an API for FLV conversion?

Yes! TheGroupDocs.Conversion API allows you to convert documents across multiple formats on .NET, Java, Python, and Node.js platforms.
Which browser is best for converting FLV files?

You can use any modern browser, such as Google Chrome, Firefox, Opera, or Safari, to convert your FLV files seamlessly.
How long do you keep my files on your servers?

Your files are stored securely on GroupDocs servers for 24 hours. After that, they are automatically deleted.
How can I access my FLV conversion results?

Once the conversion is complete, you’ll receive a download link. You can download the file instantly or choose to send the link to your email.

Other Supported Conversions

You can also convert FLV into many other file formats. Please see the complete list below.

FLV TO AVI
Avi file format
FLV TO FLV
Flash Video file format
FLV TO MKV
Matroska Video file format
FLV TO MOV
QuickTime file format
FLV TO WEBM
WEBM file format
FLV TO WMV
WMV file format
FLV TO MP3
MP3
FLV TO AAC
Advanced Audio Coding
FLV TO AIFF
Audio Interchange File Format
FLV TO FLAC
Free Lossless Audio Codec
FLV TO M4A
M4A file format
FLV TO WMA
WMA file format
FLV TO AC3
AC3 file format
FLV TO OGG
OGG file format
FLV TO WAV
WAV file format

More apps